Abstract: Application of GARNET System for Evaluation of Mineral and Energy Resources

Allison C. Olson, Simon M. Cargill

The GARNET (Graphical Analysis of Resources by Numerical Evaluation Techniques) system is a set of interactive computer programs developed to aid the geologist in analyzing irregularly spaced, point-located field data. GARNET processes the point-located data to (1) generate trend surfaces that are used to flag outlier data for the interactive editing procedure, (2) compute interpolated surface grids to be used in contour mapping and resource calculations, and (3) estimate the quantity of resources in bounded areas. The system permits the use of jurisdictional or property boundaries, outcrop patterns, or threshold levels induced by environmental or economic constraints to define specific areas for the calculation of resource volumes.

Different gridded data sets may be combined. For example, a strata-thickness map may be obtained by subtracting the grid elevation of a lower surface from that of an upper surface, or an overburden-to-deposit thickness of the overburden by that of the deposit. Maps produced by GARNET may be displayed on an interactive graphics terminal or may be directed to an off-line plotter.

GARNET enables the geologist to use automated procedures for tasks that, until now, have been done manually. Because the system is interactive, it permits the geologist to impose his own experience and judgment upon the final product.

AAPG Search and Discovery Article #90961©1978 AAPG Annual Convention and Exhibition, Oklahoma City, Oklahoma